CN105911776A

CN105911776A - Liquid Crystal Display Device

Info

Publication number: CN105911776A
Application number: CN201610037764.7A
Authority: CN
Inventors: 禹修完; 朴旻昱; 宋荣九; 申旗澈
Original assignee: Samsung Display Co Ltd
Current assignee: Samsung Display Co Ltd
Priority date: 2015-02-23
Filing date: 2016-01-20
Publication date: 2016-08-31
Anticipated expiration: 2036-01-20
Also published as: US10571757B2; US10983402B2; US9778518B2; US20180348582A1; KR102317719B1; US20180011379A1; KR20160103244A; JP2016157102A; CN105911776B; JP6815080B2; US20200150496A1; US20160246086A1; US10048549B2

Abstract

A liquid crystal display includes a first insulation substrate, a gate line, a data line configured to cross the gate line while being insulated therefrom, a thin film transistor connected to the gate line and the data line, a pixel electrode configured to include a first subpixel electrode connected to the thin film transistor and a second subpixel electrode, a second insulation substrate configured to face the first insulation substrate, a common electrode disposed on the second insulation substrate, and a liquid crystal layer disposed between the first insulation substrate and the second insulation substrate to include a plurality of liquid crystal molecules, where each of the first subpixel electrode and the second subpixel electrode includes a unit pixel electrode including a plurality of minute branches that is extended from a horizontal stem and a vertical stem.

Description

Liquid crystal display

Cross-Reference to Related Applications

This application claims in the korean patent application that on February 23rd, 2015 submits to The priority of No. 10-2015-0025398 and whole interests, be incorporated into entire contents by quoting Herein.

Technical field

The illustrative embodiments of the present invention relates to a kind of liquid crystal display.

Background technology

Liquid crystal display as one of the most common type of flat faced display in currently used (" LCD ") includes that the two panels with the field generation electrode of such as pixel electrode, common electrode etc. shows Panel and intervenient liquid crystal layer.In liquid crystal layer, voltage be applied to field produce electrode with Liquid crystal layer produces electric field.Then, the orientation of the liquid crystal molecule of liquid crystal layer is determined by electric field with control The polarization of incident illumination processed, thus show image.

In an lcd, have been developed for vertical alignment mode LCD, at vertical alignment mode LCD In, liquid crystal molecule is made the major axis of liquid crystal molecule when not applying electric field be perpendicular to by orientation Display floater.

In vertical orientation (" VA ") mode LCD, wide viewing angle is the major issue considered, and Can be realized by the otch (such as, micro slit) that field produces in electrode.Because otch is with prominent Act the incline direction that can determine that liquid crystal molecule, by using otch and projection that incline direction can be made to be distributed in In all directions, thus widen reference viewing angle.

Summary of the invention

In the case of by pixel electrode, formation micro slit provides multiple branch electrodes, by Relation in the LCD Controlling power in addition to micro slit with liquid crystal molecule causes liquid crystal molecule Response speed reduces, and therefore, texture is shown a period of time.Correspondingly, at display texture Part is blocked component and covers or show that the brightness of the part at texture is lowered, thus reduces transmission Rate.Further, cause due to the pattern of micro slit and the pixel electrode being connected to micro slit Absorbance reduces.

Additionally, reduce, institute because of the size of the pixel resolution higher along with LCD has Pattern and elemental area phase with micro slit and texture or the pixel electrode being connected to micro slit Ratio adds.Therefore, in High Resolution LCD, absorbance significantly reduces.

The present invention has been directed to provide the LCD of a kind of advantage having and can improving absorbance.Enter One step ground, even if the present invention has been directed to provide a kind of size having in pixel to have along with LCD Higher resolution is had also to be able to prevent the problem caused by absorbance reduces in the case of reducing The LCD of advantage.

The illustrative embodiments of the present invention provides a kind of LCD, including: the first insulated substrate；Grid Polar curve；Data wire, insulate with gate line while being configured to intersect with gate line；Thin film transistor (TFT) (" TFT "), is connected to gate line and data wire；Pixel electrode, is configured to include being connected to TFT The first pixel electrode and the second pixel electrode；The second insulated substrate, is configured to towards first Insulated substrate；Common electrode, is arranged on the second insulated substrate；And liquid crystal layer, it is arranged in first To include multiple liquid crystal molecule between insulated substrate and the second insulated substrate, wherein, the first sub-pixel electricity Each in pole and the second pixel electrode includes a unit picture element electrode, this unit picture element electrode Including the multiple small branch extended from a horizontal trunk and a vertical trunk.

In the exemplary embodiment, unit picture element electrode can have two territories, and these two territories have not Liquid crystal molecule with alignment direction.

In the exemplary embodiment, arrange that the region at the first pixel electrode can be the first sub-picture Element region and arrange that the region at the second pixel electrode is the second subpixel area, vertical trunk can It is arranged as adjacent with a vertical edges of the first subpixel area and the second subpixel area, horizontal trunk One end be connectable to the center of vertical trunk, and small branch may be disposed so that from vertical trunk and Horizontal trunk tilts to extend towards horizontal trunk.

In the exemplary embodiment, the first pixel electrode can have following structure, in the structure shown here Vertical trunk is arranged at right side and horizontal trunk extends to left side from right side, and small branch can Upwardly extend in upper right or in lower right.Second pixel electrode can have following structure, Vertical trunk is arranged at left side and horizontal trunk extends to right side from left side in the structure shown here, and Small branch can upwardly extend in upper left or in lower left.

In the exemplary embodiment, each in the first pixel electrode and the second pixel electrode Width can equal to or less than about 140 microns (μm).

In the exemplary embodiment, the width of each in vertical trunk or horizontal trunk can wait In or less than about 25 μm.

In the exemplary embodiment, LCD can farther include to be configured to and the first sub-pixel electricity Adjacent the 3rd pixel electrode in the left side of pole or right side, and be configured to and the second sub-pixel electricity Adjacent the 4th pixel electrode in the left side of pole or right side, wherein, the 3rd pixel electrode and first Pixel electrode has structure-oriented, and the 4th pixel electrode and the second pixel electrode have face To structure.

In the exemplary embodiment, LCD can farther include to be arranged in above data wire, adjacent Pixel electrode between bucking electrode, and bucking electrode may be arranged at identical with pixel electrode Layer at.

In the exemplary embodiment, LCD can farther include to be arranged in above data wire, adjacent Pixel electrode between bucking electrode, and bucking electrode may be arranged at less than pixel electrode At the layer of layer, to partly overlap with pixel electrode.

In the exemplary embodiment, by the first pixel electrode and the 3rd sub-pixel being adjacent The alignment direction of the liquid crystal molecule of electrode orientation can be identical, and by the second pixel electrode and with The alignment direction of the liquid crystal molecule of its 4th adjacent pixel electrode orientation can be identical.

In the exemplary embodiment, LCD can farther include to be configured to and the first sub-pixel electricity Adjacent the 3rd pixel electrode in the left side of pole or right side, and be configured to and the second sub-pixel electricity Adjacent the 4th pixel electrode in the left side of pole or right side, and the 3rd pixel electrode and the first son Pixel electrode has structure in the same direction, and the 4th pixel electrode and the second pixel electrode have in the same direction Structure.

In the exemplary embodiment, LCD can farther include the direction extension along data wire Dividing potential drop reference line, including horizontal component and vertical component.

In the exemplary embodiment, the vertical component of dividing potential drop reference line may be disposed so that and the first sub-pixel The vertical trunk of electrode and the second pixel electrode is overlapping.

In the exemplary embodiment, the horizontal component of dividing potential drop reference line can with the first subpixel area and The horizontal sides of the second subpixel area is overlapping, and therefore can picture with the first pixel electrode and second One horizontal end overlap of the small branch of element electrode.

In the exemplary embodiment, be arranged on the first subpixel area and the second subpixel area it Between TFT form the TFT arranged between region and can include being connected to gate line, data wire and first Oneth TFT of pixel electrode, is connected to gate line, data wire and the second of the second pixel electrode TFT, and it is connected to the 3rd TFT of gate line, dividing potential drop reference line and the second pixel electrode.

In the exemplary embodiment, be arranged on the first subpixel area and the second subpixel area it Between TFT form the TFT arranged between region and can include being connected to gate line, data wire and first Oneth TFT of pixel electrode, and it is connected to gate line, data wire and the second pixel electrode 2nd TFT.

In the exemplary embodiment, LCD can farther include to be arranged in the first insulated substrate or Color filter on the second insulated substrate, and be arranged on the first insulated substrate or the second insulated substrate Light obstructing member.

In the exemplary embodiment, light obstructing member can be arranged on the bearing of trend of gate line.

In the exemplary embodiment, LCD can be curved surface LCD.

According to LCD according to an illustrative embodiment of the invention, reason produces the part at texture And the pattern of the pixel electrode in LCD includes that the absorbance that the pattern of microelectrode causes reduces institute The display quality deterioration caused, can be eliminated.Further, even if when LCD has high-resolution During rate, the display quality deterioration also not produced because absorbance reduces.Additionally, the example of the present invention Property embodiment is applicable to plane LCD and curved surface LCD.

Accompanying drawing explanation

The illustrative embodiments of present disclosure, the disclosure are described in further detail by referring to accompanying drawing Above and other illustrative embodiments, advantage and the feature of content will become apparent from, its In:

Fig. 1 is the schematic diagram of pixel according to an illustrative embodiment of the invention；

Fig. 2 is the cross section intercepted along line II-II of the pixel according to illustrative embodiments of Fig. 1 Figure；

Fig. 3 to Fig. 5 shows the distribution operation of the pixel of the illustrative embodiments according to Fig. 1 Figure；

Fig. 6 shows the relation between pixel size and texture generation；

Fig. 7 shows the texture generated in an lcd；

Fig. 8 is the sectional view illustrating to generate the reason of texture as shown in Figure 6 and Figure 7；

Fig. 9 shows according to experimental example and the absorbance of the pixel of comparative example；

Figure 10 and Figure 11 shows adjacent pixel electrodes according to an illustrative embodiment of the invention Structure；

Figure 12 and Figure 13 shows the region of pixel according to an illustrative embodiment of the invention Sectional view；

Figure 14 to Figure 17 shows the equivalent electric of pixel according to an illustrative embodiment of the invention Lu Tu；

Figure 18 is the schematic diagram of the pixel according to illustrative embodiments of Figure 17；

Figure 19 is the plane graph of the pixel according to illustrative embodiments of Figure 18；

Figure 20 shows the equivalent circuit diagram of the illustrative embodiments of the pixel according to the present invention； And

Figure 21 is shown for being divided to liquid crystal by the prepolymer of the photopolymerization of such as ultraviolet by use Son provides the process of pre-tilt.

Detailed description of the invention

Hereinafter, by more comprehensive for the accompanying drawing with reference to the illustrative embodiments that there is shown the present invention Ground describes the present invention.As those skilled in the art will recognize that, completely without departing substantially from the essence of the present invention In the case of god or scope, can in a variety of ways described embodiment be repaiied Change.

In the accompanying drawings, for clarity, the thickness in layer, film, panel, region etc. is exaggerated.Pass through Wearing this specification, identical reference number refers to identical element.Should be appreciated that ought such as layer, film, When the element of region or substrate is referred to as " above " relative to another element, it can be directly separately On one element or also can there is intermediary element.On the contrary, it is referred to as " straight relative to another element when element Connect above " time, the most there is not intermediary element.

Although should be appreciated that and term " first ", " mat woven of fine bamboo strips two ", " the 3rd " etc. can being used in this article to retouch State each element, assembly, region, layer and/or part, but these elements, assembly, region, layer And/or partly should be not limited by these terms.These terms be only used for by an element, assembly, region, Layer or part distinguish with another element, assembly, region, layer or part.Therefore, without departing from this In the case of culture and education is led, the mat woven of fine bamboo strips one element discussed below, assembly, region, layer or part can be claimed Make the second element, assembly, region, layer or part.Wording used herein is merely to describe The purpose of detailed description of the invention, and be not intended to limit.Unless content clearly indicates otherwise, otherwise Singulative " one (a) ", " one (an) " and " being somebody's turn to do " are intended to include plural number as used in this article Form, including " at least one "." or " refer to "and/or".As used herein term " with / or " include the relevant one or more any and whole combinations listing in item.Should be further understood that It is, when term " includes (comprises) " and/or " including (comprising) " or " comprise (includes) " and/or time " comprising (including) " uses in this manual, it is intended that described The existence of feature, region, entirety, step, operation, element and/or assembly, but it is not excluded that and deposit Or additional other features one or more, region, entirety, step, operation, element, assembly And/or its group.

Additionally, such as D score or " bottom " and " on " or the relational terms at " top " etc. can It is used for the relation describing an element as shown in the figure with another element in this article.Should manage Solving, relational terms is intended to include the different azimuth in addition to the orientation described in figure of device.Such as, If the device in the width figure in accompanying drawing is overturn, then it is described as in the D score side of other elements Element by be oriented in other elements " on " side.Therefore, according to the concrete orientation of figure, exemplary Term D score can include D score and " on " two orientation.Similarly, if by accompanying drawing In width figure device upset, then relative to other elements be described as " ... below " or " ... it Under " element will be oriented in other elements " on ".Therefore, exemplary term " ... below " Or " ... under " can include above and below two orientation.

Consider that discussed measurement and the error being associated with the measurement of Specific amounts (that is, measure system Restriction), " about " used herein or " approximation " are included in by the ordinary skill of this area Described value in the deviation tolerance interval of the occurrence that personnel determine and meansigma methods.Such as, " about " Can represent in one or more standard deviation or described value ± 30%, 20%, 10%, In 5%.

Unless be additionally defined, all terms the most used herein (include that technical term and section are academic Language) have identical with the implication that present disclosure those of ordinary skill in the field are generally understood Implication.It will be further understood that those terms defined in such as common dictionary, it should it is construed to There is the implication consistent with they implications in the context of correlation technique and present disclosure, and Unless the most so limited, otherwise should not be construed as preferable or the most mechanical meaning Justice.

Sectional view herein by reference to the schematic diagram as Utopian embodiment describes exemplary reality Execute mode.Therefore, it is possible to the shape of drawing that causes due to such as manufacturing technology and/or tolerance of expection Change.Therefore, embodiments described herein should not be construed as being limited to district as illustrated herein The concrete shape in territory, but include the form variations produced because of such as manufacture etc..Such as, be illustrated or It is described as smooth region and is generally of coarse and/or nonlinear feature.Additionally, the wedge angle illustrated can To be fillet.Therefore, the region shown in accompanying drawing is substantially schematic, and their shape It is not intended as illustrating the accurate shape in region, and is not intended to limit the scope of present claims.

Liquid crystal according to an illustrative embodiment of the invention is described in detail referring now to Fig. 1 and Fig. 2 The structure of the pixel of display (" LCD ").

Fig. 1 is the schematic diagram of pixel according to an illustrative embodiment of the invention, and Fig. 2 is figure The sectional view intercepted along line II-II of the pixel according to illustrative embodiments of 1.

See figures.1.and.2, including gate line 121 and the grid of storage electrode line 131 and 132 Conductor is arranged on the first insulated substrate 110 comprising clear glass or plastics.Gate line 121 wraps Include gate electrode 124a, 124b and 124c, and for contacting with another layer or external drive circuit Wide gate pads (not shown).

In the exemplary embodiment, gate line 121 and storage electrode line 131 and 132 can comprise Such as aluminum (Al) or the aluminium based metal of aluminium alloy, such as silver (Ag) or the silver-base metal of silver alloy, Such as copper (Cu) or the copper base metal of copper alloy, such as molybdenum (Mo) or the molybdenio metal of molybdenum alloy, Chromium (Cr), tantalum (Ta) and titanium (Ti).In the exemplary embodiment, gate line 121 can have Having multiple structure, this multiple structure includes at least two conductive layer with different physical propertys.

Gate line 121 is arranged as cross-section pixel region on the bearing of trend be expert at.For showing different ash A pair pixel electrode of degree is arranged at the opposite end of gate line 121.Exemplary enforcement at Fig. 1 In mode, for showing that the first pixel electrode 191a of high gray scale is arranged in above gate line 121, And for showing that the second pixel electrode 191b of low gray scale is arranged in below gate line 121.

In the exemplary embodiment, storage electrode line 131 and 132 comprises and the material of gate line 121 Expect identical material, and can arrange by using the technique identical with the technique of gate line 121.

In the exemplary embodiment, such as, the first storage electrode above gate line 121 it is arranged in Line 131 can have quadrangle form, to surround the first pixel electrode 191a.It is configured to tetragon The top of first storage electrode line 131 can horizontally extending go out a pixel region, another to be connected to One layer or external drive circuit.Further, the first storage electrode line 131 of tetragon it is configured to There is the extended structure including down extending to its left vertical edges of the first contact hole 185a.According to Another exemplary embodiment may not include this extended structure.

Be arranged in the second storage electrode line 132 below gate line 121 include a pair horizontal component and A vertical component of this pair horizontal component is connected in its edge.Further, the second storage electricity Polar curve 132 has the extended structure extending upwardly to the second contact hole 185b from horizontal component.Separately In one illustrative embodiments, may not include this extended structure.

Described in the above-mentioned illustrative embodiments and show the shape of storage electrode line 131 and 132 Shape, but it is not limited to this, and storage electrode line 131 and 132 can have for performing identical function Any shape, and be not limited to this.

Gate insulator 140 is arranged on grid conductor to cover grid conductor.Conductive hole is limited to grid To expose gate pads in the part corresponding to gate pads (not shown) of pole conductor.Grid is led The part in addition to conductive hole of body can be covered by gate insulator 140.In illustrative embodiments In, gate insulator 140 can comprise the material such as including silicon oxide or silicon nitride.

Including the first semiconductor layer 154a, the second semiconductor layer 154b and the 3rd semiconductor layer 154c Semiconductor layer be arranged on gate insulator 140.Except the first semiconductor layer 154a, the second half lead Semiconductor layer outside body layer 154b and the 3rd semiconductor layer 154c is arranged in be disposed with and includes data wire 171, the region of the data conductor of the reference voltage line 172 of dividing potential drop, source electrode 173 and drain electrode 175 Lower section.In the case of when data conductor is etched, semiconductor layer etches together with data conductor, if Put this structure, and limit the raceway groove of thin film transistor (TFT) (" TFT ") the first semiconductor layer 154a, Second semiconductor layer 154b and the 3rd semiconductor layer 154c is arranged to correspond to photoresist, this photoresist Corresponding to the transflective region on mask or slit areas.

In the exemplary embodiment, semiconductor layer can include such as amorphous silicon semiconductor, oxide half Conductor or poly semiconductor.

Multiple Ohmic contact (not shown) may be arranged at except the first semiconductor layer 154a, the second half On quasiconductor outside conductor layer 154b and the 3rd semiconductor layer 154c, and when semiconductor layer includes Multiple Ohmic contact can be saved during oxide semiconductor.

Including data wire 171, the reference voltage line 172 of dividing potential drop, source electrode 173 and drain electrode 175 Data conductor be arranged in Ohmic contact.This data conductor be will be described in further detail as follows.

Data conductor include data wire the 171, first source electrode 173a, the second source electrode 173b, Three source electrodes 173c, the first drain electrode 175a, the second drain electrode 175b, the 3rd drain electrode 175c and The reference voltage line 172 of dividing potential drop.

In the exemplary embodiment, data conductor can comprise such as aluminum (Al) or the aluminum of aluminium alloy Base Metal, such as silver (Ag) or the silver-base metal of silver alloy, such as copper (Cu) or copper close Copper base metal, such as molybdenum (Mo) or the molybdenio metal of molybdenum alloy of gold, chromium (Cr), tantalum (Ta) With titanium (Ti).In the exemplary embodiment, data conductor can have multiple structure, and this multilamellar is tied Structure includes at least two conductive layer with different physical propertys.

Data wire 171 extends along the bearing of trend gone on a pixel region, and includes the first source Electrode 173a and the second source electrode 173b.First source electrode 173a and the second source electrode 173b can have There is U-shaped, but the invention is not restricted to this.

Data wire 171 includes the wide data pads for being connected with another layer or external drive circuit (not shown).

First drain electrode 175a is arranged as towards the first source electrode 173a, and has and such as correspond to The I shape of the first source electrode 173a of U-shaped, and include being connected to the first pixel electrode 191a's Wide extended area.

Similarly, the second drain electrode 175b is arranged as towards the second source electrode 173b, and has example Such as the I shape of the second source electrode 173b corresponding to U-shaped, and include being connected to the second sub-pixel electricity The wide extended area of pole 191b.

The surface that 3rd source electrode 173c is arranged to from the second drain electrode 175b extends.Such as figure Shown in 1, the second drain electrode 175b extends to be formed extended area, and again extends from extended area To constitute the 3rd source electrode 173c.

The reference voltage line 172 of dividing potential drop extends along the bearing of trend of row, but is bent and and data wire 171 differently extend, and include the 3rd drain electrode 175c constituting TFT.

The reference voltage line 172 of dividing potential drop includes multiple horizontal component and connects the multiple of horizontal component Vertical component.Specifically, the reference voltage line 172 of dividing potential drop includes horizontal component and vertical component, makes Obtain vertical component to be connected to each other by horizontal component in an end portion of parallel horizontal component.Will be in more detail Ground describes the structure of the reference voltage line 172 of dividing potential drop.The reference voltage line 172 of dividing potential drop is roughly divided into Three regions.Specifically, the reference voltage line 172 of dividing potential drop is roughly divided into: be wherein disposed with for showing Show the first pixel electrode 191a of high gray scale high gray scale subpixel area, wherein be disposed with for Show the low gray scale subpixel area of the second pixel electrode 191b of low gray scale and be arranged in two The TFT being wherein disposed with three TFT between subpixel area forms region.

The reference voltage line 172 being arranged in the dividing potential drop in high gray scale subpixel area has the angle of reversion ShapeShape structure, including a pair horizontal component and a vertical component of connection horizontal component, and And along the neighboring layout of high gray scale subpixel area.Be arranged in low gray scale subpixel area divides The reference voltage line 172 of pressure has horn shapeShape structure, including a pair horizontal component and for even Connect a vertical component of horizontal component, and be arranged in the outer circumference of low gray scale subpixel area. Finally, the reference voltage line 172 being arranged in the dividing potential drop in TFT formation region includes for connecting reversion Horn shapeShape structure and horn shapeThe vertical component of shape structure and the 3rd drain electrode 175c.? In this case, vertical component is arranged in TFT and is formed at the right side in region, and the 3rd drain electrode 175c is from the horn shape being arranged in reversionHorizontal component below shape structure extends.Can be according to exemplary Embodiment differently changes the detailed construction of the reference voltage line 172 of dividing potential drop.

Data conductor, Ohmic contact and semiconductor layer can be set simultaneously by using a mask.

First gate electrode 124a, the first source electrode 173a and the first drain electrode 175a and the first half lead Body layer 154a collectively forms a TFT Qa (with reference to Figure 14), and the raceway groove of a TFT limits At the first semiconductor layer 154a being disposed between the first source electrode 173a and the first drain electrode 175a Place.Similarly, second gate electrode 124b, the second source electrode 173b and the second drain electrode 175b and Two semiconductor layer 154b collectively form the 2nd TFT Qb (with reference to Figure 14), and the ditch of the 2nd TFT Road is limited to the second quasiconductor being disposed between the second source electrode 173b and the second drain electrode 175b At layer 154b.3rd gate electrode 124c, the 3rd source electrode 173c and the 3rd drain electrode 175c and Three semiconductor layer 154c collectively form the 3rd TFT Qc (with reference to Figure 14), and the ditch of the 3rd TFT Road is limited to the 3rd quasiconductor being disposed between the 3rd source electrode 173c and the 3rd drain electrode 175c At layer 154c.

First passivation layer 180p is arranged in semiconductor layer 154a, 154b of data conductor and exposure With on 154c.In the exemplary embodiment, such as, the first passivation layer 180p can include for shape Become the silicon nitride of inorganic insulation layer, silicon oxide etc..In the exemplary embodiment, such as, second is blunt Change layer 180q be arranged on the first passivation layer 180p, and can include such as with the first passivation layer 180p Different organic materials.According to another exemplary embodiment, the first passivation layer 180p and second blunt One changed in layer 180q can be saved.According to another exemplary embodiment, color filter may be arranged at The position of the second passivation layer 180q.In this case, the first passivation layer 180p can be used to prevent The pigment of color filter flows in semiconductor layer 154a, 154b and the 154c exposed.Even if when being disposed with During color filter, the second passivation layer 180q may be alternatively provided as covering color filter.

It is color filter at the second passivation layer 180q, and wherein, color filter is arranged at additional positions In the case of, the second passivation layer 180q can show any one primary colours, and the reality of primary colours inherently Example can include the most red, green and blue, or the three primary colours of yellow, cyan and carmetta etc.. Although not shown, but color filter can farther include the mixing for showing the primary colours in addition to primary colours Color or the color filter of white.

First contact hole 185a and the second contact hole 185b is limited to the first passivation layer 180p and second To expose the first drain electrode 175a and the second drain electrode 175b respectively in passivation layer 180q.

Pixel electrode 191 and bucking electrode 199 are arranged on the second passivation layer 180q.

Pixel electrode 191 includes the first pixel electrode 191a and the second pixel electrode 191b, it Get involved between and have gate line 121 with the most separated from one another and adjacent.First pixel electrode 191a is arranged in high gray scale subpixel area, and the second pixel electrode 191b is arranged in low ash In degree subpixel area.

Each in first pixel electrode 191a and the second pixel electrode 191b includes a water Flat trunk 193a and 193b and vertical trunk 194a and 194b, and farther include from Its these trunk tilts multiple small branch 197a and 197b extended.

In this case, small branch 197a arranges in the two directions, and therefore, first Pixel electrode 191a or the second pixel electrode 191b has two territories.Including two territories The structure of one pixel electrode 191a or the second pixel electrode 191b is referred to as a unit picture element Electrode.

As it is shown in figure 1, low gray scale subpixel area be high gray scale subpixel area about 1.5 again to about 2.5 again.Thus, although two subpixel area are different from each other, but a horizontal trunk and one Vertical trunk is arranged on the every of two subpixel area according to an illustrative embodiment of the invention In one.In other words, according to an illustrative embodiment of the invention, the first pixel electrode 191a Including small branch 197a and 197b respectively with the second pixel electrode 191b, each of which exists Arrange in both direction, and the most all include two territories.The two territory is than a common sub-pixel electricity Four territories of pole are less.To describe owing to using the territory reducing quantity to produce with reference to Fig. 6 to Fig. 9 subsequently The absorbance of raw improvement.

The bearing of trend of the small branch 197a in high gray scale pixel electrode is different from low gray scale sub-picture The bearing of trend of the small branch 197b in element electrode.Specifically, at high gray scale pixel electrode 191a In, vertical trunk 194a is arranged at right side, and horizontal trunk 193a extends to left side from right side, and And small branch 197a extends along upper right or lower right.On the contrary, at low gray scale sub-pixel In electrode 191b, vertical trunk 194b is arranged at left side, and horizontal trunk 193b extends from left side To right side, and small branch 197b extends along upper left or lower left.

The vertical trunk 194a of the first pixel electrode 191a and the second pixel electrode 191b and 194b is overlapping with the vertical component of the reference voltage line 172 of dividing potential drop respectively, and its horizontal trunk 193a Not overlapping with the horizontal component of the reference voltage line 172 of dividing potential drop with 193b.

Although pixel size becomes less in high-resolution LCD, but predetermined quantity is small Branch or trunk can be arranged to have predefined size.In an exemplary embodiment of the present invention embodiment, One trunk is arranged in a subpixel area, and therefore, it is possible to controls to produce in pixel region Texture, it is possible to reduce display error, and light transmittance can be improved.

Further, in the case of curved-surface display device is provided, can be by extending from horizontal trunk Pixel electrode reduce by the display error caused by the misalignment between upper substrate and infrabasal plate.Knot Really, LCD according to an illustrative embodiment of the invention can be applicable to the curved surface with curved-surface structure LCD and the common LCD with planar structure.Specifically, according to the exemplary embodiment party of the present invention The LCD of formula has the characteristic improved relatively further compared with other dot structures in curved-surface structure.

Bucking electrode 199 includes the vertical component 196 extended along data wire 171 and by adjacent Vertical component 196 interconnection one or more horizontal components 198.The horizontal part of bucking electrode 199 Divide 198 extended areas that may be included in the center.Bucking electrode 199 can receive and common electrode 270 The voltage that the voltage of (with reference to Fig. 8) is identical.Therefore, in bucking electrode 199 and common electrode 270 Between do not have electric field to produce, and the most intervenient liquid crystal molecule is not by orientation.As a result, between Liquid crystal molecule between bucking electrode 199 and common electrode 270 is in black state.Thus, attached Connect polariser (not shown) wherein electric field not to be applied to the state of liquid crystal molecule be shown as black In the case of, corresponding region can be covered by liquid crystal molecule itself not use extra light obstructing member In the case of be sightless.Therefore, in display device according to an illustrative embodiment of the invention, At least can omit the bearing of trend (data along row being arranged on the second insulated substrate at some parts The bearing of trend of line) light obstructing member that extends, thus improve absorbance.In this case, shading Component can be arranged along the bearing of trend of gate line, and may be arranged at first or the second insulated substrate On.

In the exemplary embodiment, pixel electrode 191 and bucking electrode 199 can include such as aoxidizing Indium stannum (" ITO ") and the transparent material of indium zinc oxide (" IZO ").

Display floater be will now be described.Although not shown, but upper display floater is to accommodate LCD In liquid crystal layer required for composed component.But, including the supernumerary structure for accommodating liquid crystal layer LCD in, display floater can be saved.

The upper display floater that description is included in an lcd.

Light obstructing member (not shown) is arranged on the second insulated substrate (not shown), this second insulation Substrate arranged is towards the first insulated substrate 110 including clear glass, plastics etc..Light obstructing member is also It is referred to as black matrix and prevents light leak.According to another exemplary embodiment, it is described as being arranged in Light obstructing member in upper display floater may be arranged in lower display floater.

In the exemplary embodiment, light obstructing member may be disposed so that at the row extended along data wire 171 Side upwardly extends.This is because due to liquid crystal layer acting on along data because of bucking electrode 199 itself Show black at the region that line 171 is arranged, and be not additionally required light obstructing member.But, in order to realize Higher shading characteristic, can arrange light obstructing member along data wire 171.In this case, although Arrange light obstructing member along data wire 171, but this light obstructing member can have than common light obstructing member The width of narrow width.Therefore, it is possible to raising absorbance.

Multiple color filter (not shown) also are disposed on the second insulated substrate.

Protective layer (not shown) may be arranged on color filter and light obstructing member.In order to remove by color filter With the step caused by light obstructing member and in order to provide flat surfaces, protective layer can include organic insulation Body.In another exemplary embodiment, protective layer can be saved.

Common electrode 270 (with reference to Fig. 8) is arranged on the protection layer.In the exemplary embodiment, Such as, common electrode 270 can include the material identical with the material of pixel electrode 191, and can set It is set to flat surfaces type and shares voltage to receive.

Further, both alignment layers (not shown) may be arranged at pixel electrode 191 and common electrode 270 Internal.

Liquid crystal layer (not shown) may be arranged in the both alignment layers between lower display floater and upper display floater Portion.Liquid crystal layer has negative dielectric anisotropic, and the liquid crystal molecule of liquid crystal layer is made it long by orientation Display floater and the surface of lower display floater it is perpendicular under the state that axle electric field wherein does not produces.

It is applied with the first pixel electrode 191a and the second pixel electrode 191b of data voltage with upper The common electrode 270 (with reference to Fig. 8) of display floater 200 (with reference to Fig. 8) produces electric field together, from And determine the alignment direction of the liquid crystal molecule of the liquid crystal layer between two electrodes 191 and 270.Root The direction of liquid crystal molecule determined by according to, the phase contrast through the light of liquid crystal layer changes, and therefore adjusts The amount of the whole light through polariser is to control display brightness.

In above-mentioned illustrative embodiments, describe the dot structure of LCD, at this dot structure In, even if it is vertical to be also provided with a horizontal trunk 193b and one in low gray scale subpixel area Trunk 194b.

Hereinafter, with reference to Fig. 3 to Fig. 5, its detailed construction will be described.

Fig. 3 to Fig. 5 shows the step-by-step process of the pixel according to illustrative embodiments of Fig. 1 Figure.

First, Fig. 3 shows the structure of grid conductor.

With reference to Fig. 3, grid conductor includes gate line 121 and storage electrode line 131 and 132.Grid Pole conductor material is stacked on insulated substrate, arranges photoresist pattern the most thereon, in order to etching shape Become grid conductor.

Gate line 121 is arranged as cross-section pixel region on the bearing of trend be expert at.First storage electrode line 131 have quadrilateral structure on gate line 121, and the second storage electrode line 132 has angle ShapeShape structure.

Gate line 121 has in the portion being disposed with first to the 3rd gate electrode 124a, 124b and 124c The part curved-surface structure that office highlights up and down.

Be configured to tetragon the first storage electrode line 131 the top can outside a pixel region, So that it is horizontally extending to be connected to another layer or external drive circuit.Further, four it are configured to First storage electrode line 131 of limit shape has and extends below structure, and this extended structure includes that it is to downward Extend the left vertical edges of the first contact hole 185a (with reference to Fig. 1).According to another exemplary embodiment May not include this extended structure.

The horn shape of the second storage electrode line 132Shape structure includes a pair horizontal component and at it Edge connects a vertical component of this pair horizontal component.Further, the second storage electrode line 132 have the extended structure extending upwardly to the second contact hole 185b (with reference to Fig. 1) from horizontal component. This extended structure is may not include according to another exemplary embodiment.

After being provided with the grid conductor shown in Fig. 3, sequentially piled grids insulating layer material, half Conductor material and data conductor material.It follows that by use mask etching semi-conducting material and Data conductor material, to form the structure shown in Fig. 4.According to another exemplary embodiment, Europe Nurse contact layer can be further arranged between semi-conducting material and data conductor material, to have and data The shape that the shape of conductor is identical.

With reference to Fig. 4, data conductor includes data wire the 171, first source electrode 173a, the second source electrode 173b, the 3rd source electrode 173c, the first drain electrode 175a, the second drain electrode 175b, the 3rd electric leakage The reference voltage line 172 of pole 175c and dividing potential drop.

Data wire 171 extends along the bearing of trend gone on a pixel region, and includes the first source Electrode 173a and the second source electrode 173b.In first source electrode 173a and the second source electrode 173b Each is arranged as having U-shaped.Specifically, the first source electrode 173a has the U-shaped of upper side opening, And the second source electrode 173b has the U-shaped of right openings.

First drain electrode 175a is arranged as towards the first source electrode 173a, and has corresponding to U-shaped The I shape of the first source electrode 173a, and include being connected to the wide of the first pixel electrode 191a Extended area.

Second drain electrode 175b is arranged as towards the second source electrode 173b, and has corresponding to U-shaped The I shape of the second source electrode 173b, and include being connected to the wide of the second pixel electrode 191b Extended area.

3rd source electrode 173c is by extending from the surface of the second drain electrode 175b and then from from the The region extension that two drain electrode 175b extend is arranged.

Extend on the bearing of trend that the reference voltage line 172 of dividing potential drop is expert at, but be bent and and data Line 171 and the 3rd drain electrode 175c differently extends.The reference voltage line 172 of dividing potential drop includes level Part and vertical component so that vertical component in an end portion of horizontal component by level parallel to each other Part connects.As shown in Figure 4, the reference voltage line 172 of dividing potential drop is roughly divided into three regions.Arrange The reference voltage line 172 of the dividing potential drop in high gray scale subpixel area has the horn shape of reversionShape is tied Structure, including a pair horizontal component and a vertical component of connection horizontal component, and along high ash The neighboring of degree subpixel area is arranged.Further, be arranged in low gray scale subpixel area divides The reference voltage line 172 of pressure has horn shapeShape structure, including a pair horizontal component and connection water One vertical component of flat part, and along the neighboring layout of low gray scale subpixel area.Finally, The reference voltage line 172 being arranged in the dividing potential drop in TFT formation region includes the horn shape for connecting reversion 'sShape structure and horn shapeThe vertical component of shape structure and the 3rd drain electrode 175c.This In the case of, vertical component is arranged in TFT and is formed at the right side in region, and the 3rd drain electrode 175c From the horn shape being arranged in reversionHorizontal component below shape structure extends.

When data conductor is etched, also etch semiconductor layer, and the major part layout of semiconductor layer Below data conductor.But, limit respectively the first semiconductor layer 154a at the raceway groove of TFT, Second semiconductor layer 154b and the 3rd semiconductor layer 154c exposes thereon.Use slit mask or Transflective mask formed the first semiconductor layer 154a of exposure, the second semiconductor layer 154b and 3rd semiconductor layer 154c.

In other words, when arranging data conductor, use slit mask or transflective mask.? In this case, slit mask or transflective mask include regional transmission, shaded areas and half Transflective region.Transflective layer or slit are arranged at transflective region.Arrange For the photoresist of regional transmission and shaded areas for forming most of patterns of data conductor, and by The photoresist arranged by transflective region is provided as the first semiconductor layer of remaining area 154a, the second semiconductor layer 154b and the 3rd semiconductor layer 154c.By using a mask and Individual operation arranges data conductor, the first semiconductor layer 154a, the second semiconductor layer 154b and the 3rd half The pattern of conductor layer 154c.

It follows that the first passivation layer 180p and the second passivation layer 180q be set to cover data conductor and Quasiconductor (the first semiconductor layer 154a, the second semiconductor layer 154b and the 3rd of exposure thereon Semiconductor layer 154c) and gate insulator.It follows that the first contact hole 185a and second contact Hole 185b is defined to expose the first drain electrode 175a and the second drain electrode 175b respectively.

It follows that as it is shown in figure 5, arrange pixel electrode 191 and bucking electrode 199.

Pixel electrode 191 includes the first pixel electrode 191a and the second pixel electrode 191b.The One pixel electrode 191a is arranged in high gray scale subpixel area, and the second pixel electrode 191b is arranged in low gray scale subpixel area.

First pixel electrode 191a and the second pixel electrode 191b includes a horizontal trunk respectively 193a and 193b and vertical trunk 194a and 194b, and include the most respectively from this Multiple small branch 197a and 197b that a little trunks obliquely extend from.

Low gray scale subpixel area be high gray scale subpixel area about 1.5 again to about 2.5 times.Thus, Although two subpixel area are different from each other, but a horizontal trunk and a vertical trunk are set In each in two subpixel area according to an illustrative embodiment of the invention.Change speech It, according to an illustrative embodiment of the invention, the first pixel electrode 191a and the second sub-pixel Electrode 191b includes small branch 197a and 197b respectively, and each of which is arranged in the two directions Row, and the most each include two territories.The two territory is than four territories of a common pixel electrode Less.To describe by using the absorbance caused by the territory reducing quantity to change with reference to Fig. 6 to Fig. 9 subsequently Kind.

The vertical trunk 194a of the first pixel electrode 191a and the second pixel electrode 191b and 194b is overlapping with the vertical component of the reference voltage line 172 of dividing potential drop, and its horizontal trunk 193a and 193b is not overlapping with the horizontal component of the reference voltage line 172 of dividing potential drop.

Although pixel size becomes less in high-resolution LCD, but predetermined quantity is small Branch or trunk may be configured as having predefined size.In an exemplary embodiment of the present invention embodiment, one Individual trunk is arranged in a subpixel area, and therefore, it is possible to controls the stricture of vagina produced in pixel region Reason, it is possible to reduce display error, and light transmittance can be improved.

Further, in the case of curved-surface display device is provided, can be by extending from horizontal trunk Pixel electrode reduce the display error that caused by misalignment between upper substrate and infrabasal plate.As a result, root The curved surface LCD with curved-surface structure is can be applicable to according to the LCD of the illustrative embodiments of the present invention, And there is the common LCD of planar structure.Specifically, according to an illustrative embodiment of the invention LCD has the characteristic improved relatively further compared with other dot structures in curved-surface structure.

Bucking electrode 199 includes the vertical component 196 extended along data wire 171 and by adjacent Vertical component 196 interconnection one or more horizontal components 198.The horizontal part of bucking electrode 199 Divide the extended area of 198 centers that may be included in it.Bucking electrode 199 can receive and common electrode The voltage that the voltage of 270 (with reference to Fig. 8) is identical.Therefore, in bucking electrode 199 and common electrode Do not produce electric field between 270, and the most intervenient liquid crystal molecule is not by orientation.As a result, Liquid crystal molecule between bucking electrode 199 and common electrode 270 is in black state.Thus, At attachment polariser (not shown), wherein electric field is not applied to the state of liquid crystal molecule to be shown In the case of black, corresponding region can be covered by liquid crystal molecule itself not use extra shading It is sightless in the case of component.Therefore, in display according to an illustrative embodiment of the invention In device, at least can omit to be arranged on the second insulated substrate at some parts and extend in a column direction Light obstructing member, thus improve absorbance.

In the exemplary embodiment, pixel electrode 191 and bucking electrode 199 can include transparent material, Such as, ITO and IZO.

The characteristic of the LCD with the structure arranged like this will be described with reference to Fig. 6 to Fig. 9.

Fig. 6 shows the relation between pixel size and texture generation.

Fig. 6 shows two pixels each with different in width and texture.

Leftmost pixel shows the height with the pixel that the LCD of 46 inches of full HD resolution includes The photo (on right side) of gray scale pixel electrode (in left side) and texture.Leftmost pixel has about The width of 210 microns (μm), and trunk has the width of about 35 μm.Further, 14 slits are provided by small branch.Indicate when using the pixel with this structure, several Do not produce any texture.

Right pixels shows the height with the pixel that the LCD of 55 inches of full HD resolution includes The photo (on right side) of gray scale pixel electrode (in left side) and texture.Right pixels has about The width of 105 μm, and trunk has the width of about 18 μm.Further, by micro- Subbranch provides seven slits.Find out when using the pixel with this structure, create a large amount of stricture of vagina Reason, thus reduce absorbance.

Therefore absorbance is planted a reason of texture deterioration and is as resolution increase, shared by pixel electrode According to space reduce.Additionally, the ratio that the width that Another reason is trunk and/or small branch reduces It is relatively shorter than the ratio that the area of pixel reduces.This is because the width of trunk and/or small branch passes through The resolution of exposer determines, and along with the pattern of pixel electrode is miniaturized, the resolution of exposer Rate is close to its limit.

Pixels that are further, different from the illustrative embodiments of the present invention, that use in figure 6 The structure of electrode includes two unit picture element electrodes, each of which include a horizontal trunk, One vertical trunk and multiple small branch.As a result, adapter can be arranged as connecting two unit picture elements Electrode, and the alignment direction of the liquid crystal molecule being arranged on around adapter can be different from be arranged on each The alignment direction of the liquid crystal molecule at territory.In. fig. 6, it can be seen that, there is large-sized left side Pixel does not produce texture, and the problem of the orientation of liquid crystal molecule have impact on the territory in right pixels.

Thus, because a pixel electrode includes having in having undersized high-resolution pixel The unit picture element electrode in two territories, so each pixel electrode includes having two in the present invention The unit picture element electrode in territory.

According to the experiment in Fig. 6, when using pixel electrode during two unit picture element electrodes to have about In the case of the width of 105 μm, produce texture.But, in the case of 210 μm, do not produce Texture.Consider that another is tested, as the illustrative embodiments of the present invention, have at pixel electrode In the case of width below 140 μm, by using a unit picture element electrode to form a sub-picture Element electrode can aid in raising display quality.

Further, there is the situation of the width of below 25 μm at horizontal trunk or vertical trunk Under, can aid in raising display by using a unit picture element electrode to form a pixel electrode Quality.

As shown in the right pixels of Fig. 6, Fig. 7 is also shown in the pixel of 55 inches of LCD producing Texture.

In fig. 7 it is shown that the highest gray scale pixel electrode include two unit picture element electrodes and Low gray scale pixel electrode includes the structure of two unit picture element electrodes.

As by shown in the arrow in Fig. 7, it can be seen that around the company connecting two unit picture element electrodes Connect device and produce texture.Therefore, there is preliminary dimension level (that is, the width below 210 μm) Pixel in the case of, can by use a unit picture element electrode reduce texture.

Fig. 8 shows the reason producing texture in curved surface LCD.

Fig. 8 is the sectional view of the LCD according to embodiment that will be briefly described.

In lower display floater, data wire 171 is arranged in infrabasal plate 110.Further, based on Data wire 171 different color filter arranged apart.Although insulating barrier and wiring layer may be arranged at lower insulation Between substrate 110 and data wire 171, but in this explanation, omit them for simplicity.Picture Element electrode 191 may be arranged on color filter 230.In upper display floater, light obstructing member 220 is arranged At the side of upper insulated substrate 210.Further, protective layer 250 is arranged as covering light obstructing member 220.Common electrode 270 is arranged in below protective layer 250.There is the liquid crystal layer cloth of liquid crystal molecule 31 Put between upper display floater and lower display floater.

In the case of LCD is set to curved surface type, upper substrate and the curature variation of infrabasal plate, on The alignment direction partial inversion each other of group and lower group of liquid crystal molecule.These contrary orientations are produced in one domain Texture can be considered time raw.Therefore, curved surface LCD has higher probability generation stricture of vagina than plane LCD Reason.Therefore, according to the illustrative embodiments of the present invention, by using a unit picture element electrode shape Become each pixel electrode can reduce texture to improve absorbance.

Fig. 9 is shown in which by using a unit picture element electrode to arrange a pixel electrode Experimental example and a comparative example including two unit picture element electrodes in two of which pixel electrode Between absorbance comparison.

Fig. 9 shows a part for a display floater, specifically, the first pixel and upwards and to Under be adjacent to the second pixel and the 3rd pixel of the first pixel.That is, one pixel is got in each picture In the middle part of crossing, heavy black extends to bottom black line from top black line.Show adjacent in pixel the upper side and lower side Pixel.Specifically, a sub-pixel (high gray scale sub-pixel) of pixel is from top black line extends to Portion's heavy black, and another sub-pixel (low gray scale sub-pixel) is bottom middle part heavy black extends to Black line.Further, in the left column of Fig. 9, a sub-pixel includes a unit picture element electrode, And therefore between high gray scale subpixel area and low gray scale subpixel area, do not show black line.Cause This, do not produce intensity loss.

On the contrary, in the comparative example shown in the right side of Fig. 9, high gray scale pixel electrode includes a list Position pixel electrode, and low gray scale pixel electrode includes two unit picture element electrodes.Although low gray scale is sub Pixel electrode is more than high gray scale pixel electrode, and the lowest gray scale pixel electrode includes two lists Position pixel electrode, but the texture of relatively small amount can be produced.Therefore, this situation is chosen to be and compares Example.But, as shown in the right side of Fig. 9, produce in the center of the low gray scale subpixel area of comparative example Raw black line, thus reduce brightness.In this case, in producing between two unit picture element electrodes Heart black line.This center black line makes luminance-reduction, thus deteriorates display quality.Therefore, with comparative example phase Ratio, the light characteristic of experimental example can obtain more improvement.

In above-mentioned experimental example, describe the width in pixel with below 140 μm, or level In the case of trunk or vertical trunk have the width of below 25 μm, by using a unit picture element Electrode forms a pixel electrode can improve absorbance.

Hereinafter, the arrangement that will describe between adjacent pixel electrodes.

Figure 10 and Figure 11 shows adjacent pixel electrodes according to an illustrative embodiment of the invention Structure.

First, Figure 10 shows a pixel electrode and another pixel electrode being adjacent Rankine-Hugoniot relations.

In the illustrative embodiments of Figure 10, it is being arranged in the of (the n-th row pixel) place, left side In one pixel electrode, vertical trunk 194 is arranged in left side, and horizontal trunk 193 and small point Prop up 197 to be arranged as extending from left side towards right side.It is being arranged in right side ((n+1) row pixel) In second pixel electrode at place, vertical trunk 194-1 is arranged in right side, and horizontal trunk 193-1 It is arranged as extending from right side towards left side with small branch 197-1.This structure is referred to as structure-oriented.

According to embodiment, it is arranged in the second sub-pixel electricity at ((n+1) row pixel) place, right side Pole and the first pixel electrode being arranged in (the n-th row pixel) place, left side have symmetrical structure.According to Another exemplary embodiment, at the second sub-picture being arranged in ((n+1) row pixel) place, right side In element electrode, vertical trunk may be arranged at left side, and horizontal trunk and small branched layout are from a left side Side extends towards right side.This structure is referred to as structure in the same direction.Because structure is by repeating a pixel in the same direction Arrange, so not providing their additional diagram.

Similarly, Figure 11 shows the situation with the structure identical with the structure-oriented shown in Figure 10 Under the structure of neighbor.

Symbol "<" and ">" shown in Figure 11 does not indicates that the structure actually belonging to pixel, and It is to add clearly to represent the direction that wherein pixel electrode is set.

As shown in figure 11, each pixel electrode has the structure-oriented of horizontal adjacent pixels.But, As it has been described above, all adjacent pixel electrodes can have structure in the same direction.

Hereinafter, with reference to Figure 12 and Figure 13, will be described showing of the layer position according to bucking electrode 199 Example embodiment.

Figure 12 and Figure 13 shows the region of pixel according to an illustrative embodiment of the invention Sectional view.

In the illustrative embodiments of Figure 12, pixel electrode 191R and 191L and bucking electrode 199 are arranged in the layer identical with the layer in the illustrative embodiments of Fig. 1.

Will be briefly described the structure of Figure 12.

Gate insulator 140 covers on lower insulated substrate 110.It is exhausted that data wire 171 is arranged in grid In edge layer 140.Passivation layer 180 is arranged on data wire 171 and covers data wire 171.Pixel Electrode 191R and 191L and bucking electrode 199 are arranged on passivation layer 180.Bucking electrode 199 It is arranged in above data wire 171, and along the bearing of trend setting of data wire 171.Right pixels Electrode 191R is arranged in the right side of bucking electrode 199, and leftmost pixel electrode 191L is arranged in screen Cover the left side of electrode 199.

In the illustrative embodiments of Figure 12, pixel electrode 191R and 191L and bucking electrode 199 are arranged at identical layer, and accordingly, it would be desirable at pixel electrode 191R and 191L and shielding electricity Predetermined nargin is set between pole 199 to prevent short circuit therebetween.In other words, leftmost pixel electrode 191L And generally remain preset distance between right pixels electrode 191R.Therefore, although set up at adjacent picture The alignment direction of the liquid crystal molecule in element region is different from each other, but liquid crystal molecule unlikely affects that This.As a result, as shown in figure 12, although set up the liquid crystal molecule in adjacent pixel regions in difference Orientation on direction, but will not come into question.In the illustrative embodiments of Figure 12, work as setting When liquid crystal molecule in adjacent pixel regions has identical alignment direction, also will not come into question.

As shown in figure 13, pixel electrode 191R and 191L and bucking electrode 199 are arranged on different layers Place.

Will be briefly described the structure shown in Figure 13.

Gate insulator 140 is coated on lower insulated substrate 110.It is exhausted that data wire 171 is arranged in grid In edge layer 140.First passivation layer 180p is arranged on data wire 171 and covers data wire 171. Bucking electrode 199 is arranged on the first passivation layer 180p.Bucking electrode 199 is arranged in data wire 171 Top, and along the bearing of trend setting of data wire 171.Second passivation layer 180q is arranged in screen Cover on electrode 199 and cover bucking electrode 199, and pixel electrode 191R and 191L is arranged in On second passivation layer 180q.

In the illustrative embodiments of Figure 13, pixel electrode 191R and 191L and bucking electrode 199 It is arranged at different layers.In the exemplary embodiment, bucking electrode 199 is arranged below pixel electricity At the layer of pole 191R and 191L.In this case, even if as pixel electrode 191R and 191L Time overlapping with bucking electrode 199, also produce short circuit.Correspondingly, it is possible to reduce adjacent pixel electrodes it Between distance.As a result, when being arranged on the orientation in different directions of the liquid crystal molecule at two neighbors Time, liquid crystal molecule influences each other, thus produces texture.Therefore, the exemplary embodiment party of Figure 13 In formula, it is arranged on the orientation in the same direction of the liquid crystal molecule at two neighbors, energy by allowing Enough improve display quality.

The illustrative embodiments of the present invention relates to the structure of pixel electrode, and therefore can change other Structure.Hereinafter, illustrated respectively by the equivalent circuit of the pixel of Figure 14 to Figure 17 and Figure 20 The pixel of type.Hereinafter, difference in every way will be used for by the description of simple circuit diagram Ground adjusts the structure of the voltage level of two pixel electrodes.

First, the illustrative embodiments of Figure 14 will be described.

In fig. 14 it is shown that by using reference voltage line RL described above by difference voltage Level applies the circuit diagram of the pixel to two pixel electrodes.

In fig. 14, high gray scale sub-pixel and low gray scale sub-pixel are represented by PXa and PXb respectively.

With reference to Figure 14, LCD according to an illustrative embodiment of the invention include holding wire and and its Pixel PX connected, holding wire includes gate lines G L, data wire DL, the ginseng of transmission reference voltage Examine pressure-wire RL etc..

Each pixel includes the first sub-pixel PXa and the second sub-pixel PXb.First sub-pixel PXa Including the first switch element Qa and the first liquid crystal capacitor Clca, and the second sub-pixel PXb includes Second switch element Qb and the 3rd switch element Qc and the second liquid crystal capacitor Clcb.First opens Close element Qa and second switch element Qb and be connected to gate lines G L and data wire DL, and the Three switch element Qc are connected to lead-out terminal and the reference voltage line RL of second switch element Qb.The The lead-out terminal of one switch element Qa is connected to the first liquid crystal capacitor Clca, and second switch unit The lead-out terminal of part Qb is connected to the second liquid crystal capacitor Clcb and the input of the 3rd switch element Qc Terminal.The control terminal of the 3rd switch element Qc is connected to gate lines G L, and its input terminal is connected to Second liquid crystal capacitor Clcb, and its lead-out terminal is connected to reference voltage line RL.

Now the operation of pixel PX shown in Figure 14 will be described.When gate-on voltage Von first Apply to gate lines G L time, connected first switch element Qa, second switch element Qb with And the 3rd switch element Qc conducting.Therefore, opened by the first switch element Qa and second of conducting Close element Qb, apply to the data voltage of data wire DL to be applied respectively to the first liquid crystal capacitor Clca and the second liquid crystal capacitor Clcb, and the difference therefore and between data voltage and shared voltage Proportionally the first liquid crystal capacitor Clca and the second liquid crystal capacitor Clcb is charged.In this feelings Under condition, by the first switch element Qa and second switch element Qb, identical data voltage is transmitted To the first liquid crystal capacitor Clca and the second liquid crystal capacitor Clcb, but the second liquid crystal capacitor Clcb Charging voltage by the 3rd switch element Qc by dividing potential drop.As a result, the second liquid crystal capacitor Clcb The charging voltage charging voltage less than the first liquid crystal capacitor Clca, and therefore two sub-pixel PXa Brightness with PXb can be different.Therefore, by suitably adjusting the voltage of the first liquid crystal capacitor Clca Voltage with the second liquid crystal capacitor Clcb, it is possible to the image controlling to be seen from the side connects as much as possible It is bordering on the image seen from front, thus improves side visibility.

But, the dot structure of LCD according to an illustrative embodiment of the invention can be changed, and It is not limited to the illustrative embodiments of Figure 14.

Hereinafter, the illustrative embodiments of Figure 15 will be described.

LCD according to an illustrative embodiment of the invention includes holding wire and connected many Individual pixel PX, this holding wire includes a plurality of gate lines G L, a plurality of data lines DL and a plurality of storage Electrode wires SL.Each pixel PX includes a pair first sub-pixel PXa and the second sub-pixel PXb, First pixel electrode is arranged in the first sub-pixel PXa, and the second pixel electrode is arranged on In two sub-pixel PXb.

LCD according to an illustrative embodiment of the invention includes being coupled to gate lines G L and data The switch element Q of line DL, it is coupled to be arranged in the first sub-pixel PXa the of switch element Q One storage capacitor Csta and the first liquid crystal capacitor Clca, be coupled to being arranged on of switch element Q The second liquid crystal capacitor Clcb and second storage capacitor Cstb in second sub-pixel PXb, and It is arranged on the auxiliary capacitor Cas between switch element Q and the second liquid crystal capacitor Clcb.

The three-terminal element (such as, TFT etc.) that switch element Q is arranged in lower display floater, its Control terminal is connected to gate lines G L, and its input terminal is coupled to data wire DL, and its outfan Son is connected to the first liquid crystal capacitor Clca, the first storage capacitor Csta, auxiliary capacitor Cas.

One terminal of auxiliary capacitor Cas is connected to the lead-out terminal of switch element Q, and its Another terminal is connected to the second liquid crystal capacitor Clcb and second storage capacitor Cstb.

By the effect of auxiliary capacitor Cas, the charging voltage of the second liquid crystal capacitor Clcb is less than The charging voltage of the first liquid crystal capacitor Clca, thus improve the side visibility of LCD.

Hereinafter, the illustrative embodiments of Figure 16 will be described.

LCD according to an illustrative embodiment of the invention includes holding wire and connected many Individual pixel PX, holding wire includes a plurality of gate lines G Ln and GL (n+1), a plurality of data lines DL And a plurality of storage electrode line SL.Each pixel PX includes a pair first sub-pixel PXa and second Sub-pixel PXb, the first pixel electrode is arranged in the first sub-pixel PXa, and the second sub-pixel Electrode is arranged in the second sub-pixel PXb.

LCD according to an illustrative embodiment of the invention farther includes to be connected to gate lines G Ln With the first switch element Qa and second switch element Qb of data wire DL, be arranged on the first sub-pixel The the first liquid crystal capacitor Clca being connected to the first switch element Qa in PXa, it is arranged on the second son Pixel PXb is connected to the first storage capacitor Csta and second liquid crystal of second switch element Qb Capacitor Clcb, it is connected to second switch element Qb and by gate lines G L (n+1) of next stage The 3rd switch element Qc switched and the auxiliary capacitor Cas being connected to the 3rd switch element Qc.

Three ends that first switch element Qa and second switch element Qb is arranged in lower display floater Element (such as, TFT), control terminal is connected to gate lines G Ln, and input terminal is connected to Data wire DL, and lead-out terminal be respectively connecting to the first liquid crystal capacitor Clca and first storage electricity Container Csta and the second liquid crystal capacitor Clcb and second storage capacitor Cstb.

(such as, 3rd switch element Qc is also provided in the three-terminal element in lower display floater 100 TFT), control terminal is connected to gate lines G L (n+1) of next stage, and input terminal is connected to Second liquid crystal capacitor Clcb, and lead-out terminal is connected to auxiliary capacitor Cas.

One terminal of auxiliary capacitor Cas is connected to the lead-out terminal of the 3rd switch element Qc, and And another terminal is connected to storage electrode line SL.

Operation by description LCD according to an illustrative embodiment of the invention.When gate turn-on electricity When pressure applies to gate lines G Ln, connected first switch element Qa and second switch element Qb turns on, and the data voltage of data wire 171 applies to the first and second pixel electrodes.

It follows that when grid cut-off voltage applies to gate lines G Ln and gate-on voltage to apply During to gate lines G L (n+1) of next stage, the first switch element Qa and second switch element Qb Cut-off and the 3rd switch element Qc conducting.As a result, the output of second switch element Qb it is connected to The electric charge of the second pixel electrode of terminal flows in auxiliary capacitor Cas so that the second liquid crystal capacitance The voltage of device Clcb is lowered.

Thus, can be by being adjusted differently than the first liquid crystal capacitor Clca and the second liquid crystal capacitor The charging voltage of Clcb improves the side visibility of LCD.

It follows that the illustrative embodiments that Figure 17 will be described.

LCD according to an illustrative embodiment of the invention includes holding wire and connected many Individual pixel PX, holding wire includes a plurality of gate lines G L, a plurality of data lines DL1 and DL2 and many Bar storage electrode line SL.Each pixel PX includes the first liquid crystal capacitor Clca and the second liquid crystal electricity Container Clcb and first storage capacitor Csta and second storage capacitor Cstb's is right.

Each sub-pixel includes a liquid crystal capacitor and a storage capacitor and farther includes One TFT Q.The TFT Q of two sub-pixels in one pixel is connected to identical gate lines G L, But it is coupled to different data wire DL1 and DL2.Different data wire DL1 and DL2 executes simultaneously Add different data voltage level so that the first liquid crystal capacitor Clca of two pixels and the second liquid Brilliant capacitor Clcb has different charging voltages.Therefore, it can improve the side visibility of LCD.

Before describing dot structure with reference to Figure 20, will be described this in detail with reference to Figure 18 and Figure 19 The illustrative embodiments of the bright illustrative embodiments corresponding to Figure 17.

Figure 18 is the schematic diagram of the pixel according to illustrative embodiments of Figure 17.

In the illustrative embodiments of Figure 18, including gate line 121 and storage electrode line 131 Grid conductor is arranged on the first insulated substrate including clear glass or plastics.Gate line 121 wraps Include gate electrode 124a with 124b and for the width carrying out contacting with another layer or external drive circuit Gate pads (not shown).

Gate line 121 is arranged as cross-section pixel region on the bearing of trend be expert at.For showing different ash A pair pixel electrode of degree is arranged at the opposite end of gate line 121.Exemplary reality at Figure 18 Execute in mode, for showing that the first pixel electrode 191a of high gray scale is arranged in gate line 121 Side, and for showing that the second pixel electrode 191b of low gray scale is arranged in below gate line 121.

Storage electrode line 131 can include the material identical with the material of gate line 121, and can pass through The technique identical with the technique of gate line 121 is used to arrange.

It is arranged in the first storage electrode line 131 above gate line 121 and can have this tetragon shape Shape, to surround the first pixel electrode 191a.It is configured to the first storage electrode line 131 of tetragon The upper side and lower side can be outside a pixel region, in order to horizontally extending be connected to another layer or External drive circuit.Further, the downside of the first storage electrode line 131 has and extends downward The extended structure of one contact hole 185a.This extension knot is may not include according to another exemplary embodiment Structure.

On grid conductor, grid conductor is covered by gate insulator 140 (with reference to Fig. 2).Conduction Hole is limited to the part corresponding to gate pads (not shown) of grid conductor and sentences exposure grid weldering Dish.The part in addition to conductive hole of grid conductor can be covered by gate insulator 140.

Semiconductor layer including the first semiconductor layer 154a and the second semiconductor layer 154b is arranged in grid On insulating barrier 140.Except the first semiconductor layer 154a and the semiconductor layer of the second semiconductor layer 154b Be arranged in and be disposed with below the region of data conductor, this data conductor include the first data wire 171a and Second data wire 171b, the first source electrode 173a and the second source electrode 173b and the first drain electrode 175a and the second drain electrode 175b.At the semiconductor layer when data conductor etches together with data conductor In the case of etching, this structure is set, forms the first semiconductor layer 154a and the of the raceway groove of TFT Two semiconductor layer 154b are arranged to correspond to photoresist, and this photoresist is corresponding to half transflection on mask Penetrate formula region or slit areas.

Semiconductor layer can include amorphous silicon semiconductor, oxide semiconductor or poly semiconductor.

Multiple Ohmic contact (not shown) may be arranged at except the first semiconductor layer 154a and the second half On quasiconductor outside conductor layer 154b and permissible when semiconductor layer includes oxide semiconductor Save multiple Ohmic contact.

Data conductor is arranged in Ohmic contact.

Data conductor include the first data wire 171a and the second data wire 171b, the first source electrode 173a, Second source electrode 173b, the first drain electrode 175a and the second drain electrode 175b.

First data wire 171a and the second data wire 171b is in the direction of extension along a pixel region Left hand edge and right hand edge extend, and each include the first source electrode 173a and the second source electrode 173b.First source electrode 173a and the second source electrode 173b can have U-shaped, but are not limited to this.

First drain electrode 175a is arranged as towards the first source electrode 173a, and such as, has correspondence In the I shape of the first source electrode 173a of U-shaped, and include being connected to the first pixel electrode 191a Wide extended area.

Similarly, the second drain electrode 175b is arranged as towards the second source electrode 173b, and such as, There is the I shape of the second source electrode 173b corresponding to U-shaped, and include being connected to the second sub-pixel The wide extended area of electrode 191b.

First gate electrode 124a, the first source electrode 173a and the first drain electrode 175a and the first half lead Body layer 154a collectively forms a TFT Qa, and the raceway groove of a TFT is limited to be arranged in At the first semiconductor layer 154a between first source electrode 173a and the first drain electrode 175a.Similar Ground, second gate electrode 124b, the second source electrode 173b and the second drain electrode 175b and the second quasiconductor Layer 154b constitutes a 2nd TFT Qb together, and raceway groove be limited to the second source electrode 173b with At the second semiconductor layer 154b between second drain electrode 175b.

First passivation layer is arranged on semiconductor layer 154a and 154b of data conductor and exposure.? In illustrative embodiments, such as, the first passivation layer can include the nitridation for forming inorganic insulation layer Silicon, silicon oxide etc..Second passivation layer is arranged on the first passivation layer 180p, and is passivated with first Layer is different, and the second passivation layer can include organic material.According to another exemplary embodiment, first is blunt One changed in layer and the second passivation layer can be removed.According to another exemplary embodiment, color filter May be arranged at the position of the second passivation layer.In this case, the first passivation layer 180p can be used to The pigment preventing color filter is flowed in semiconductor layer 154a and 154b of exposure.Even if when being disposed with During color filter, the second passivation layer may be alternatively provided as covering color filter.

First contact hole 185a and the second contact hole 185b is limited to the first passivation layer and the second passivation layer In to expose the first drain electrode 175a and the second drain electrode 175b respectively.

First pixel electrode 191a and the second pixel electrode 191b may be arranged at the second passivation layer On.

The available gate line therebetween of first pixel electrode 191a and the second pixel electrode 191b 121 be arranged as discretely the most adjacent one another are.First pixel electrode 191a is arranged in high ash In degree subpixel area, and the second pixel electrode 191b is arranged in low gray scale subpixel area.

First pixel electrode 191a and the second pixel electrode 191b includes a horizontal trunk respectively 193a and 193b and vertical trunk 194a and 194b, and farther include from these main Multiple small branch 197a and 197b that dry inclination extends.

In this case, small branch 197a arranges in the two directions, and therefore, first Pixel electrode 191a or the second pixel electrode 191b has two territories.Including two territories The structure of one pixel electrode 191a or the second pixel electrode 191b is referred to as a unit picture element electricity Pole.

As shown in figure 18, low gray scale subpixel area be about 1.5 times of high gray scale subpixel area extremely About 2.5 times.Thus, although two subpixel area are different from each other, but a horizontal trunk and Individual vertical trunk is arranged on two subpixel area according to an illustrative embodiment of the invention In each.In other words, according to an illustrative embodiment of the invention, the first pixel electrode 191a Including small branch 197a and 197b respectively with the second pixel electrode 191b, each of which exists Arrange in both direction, and the most all include two territories.The two territory is than a common sub-pixel electricity Four territories of pole are less.

Further, in the case of curved-surface display device is provided, can be by extending from horizontal trunk Pixel electrode reduce by the display error caused by misalignment between upper substrate and infrabasal plate.As a result, LCD according to an illustrative embodiment of the invention can be applicable to the curved surface with curved-surface structure LCD, and there is the common LCD of planar structure.Specifically, according to the exemplary enforcement of the present invention The LCD of mode has the spy improved relatively further compared with other dot structures in curved-surface structure Property.

In the exemplary embodiment, the first pixel electrode 191a and the second pixel electrode 191b Transparent material, such as, ITO and IZO can be included.

Display floater be will now be described.Although not shown, but upper display floater is to accommodate LCD In the required composed component of liquid crystal layer.But, including the supernumerary structure for accommodating liquid crystal layer LCD in, display floater can be saved.

The upper display floater that description is included in an lcd.

Light obstructing member (not shown) is arranged on the second insulated substrate (not shown), this second insulation Substrate arranged is towards the first insulated substrate 110 including clear glass, plastics etc..Light obstructing member is also It is referred to as black matrix and prevents light leak.According to another exemplary embodiment, it is described as being arranged in Light obstructing member in display floater may be arranged in lower display floater.

In the exemplary embodiment, light obstructing member may be disposed so that on the bearing of trend of row along grid Line 121 and the first data wire 171a and the second data wire 171b extends.

Protective layer (not shown) may be arranged on color filter and light obstructing member.In illustrative embodiments In, protective layer can include organic insulator, is used for removing by the platform caused by color filter and light obstructing member Rank and flat surfaces is provided.In another exemplary embodiment, protective layer can be saved.

Common electrode 270 (with reference to Fig. 8) is arranged on the protection layer.Common electrode 270 can include with The material that the material of pixel electrode 191 (with reference to Fig. 8) is identical, and can be set to flat surfaces class Type shares voltage to receive.

Liquid crystal layer (not shown) may be arranged in the both alignment layers between lower display floater and upper display floater Portion.In the exemplary embodiment, liquid crystal layer has negative dielectric anisotropic, and alignment liquid crystal layer Liquid crystal molecule make its major axis be perpendicular to when not having electric field to generate display floater and under The surface of display floater.

It is applied with the first pixel electrode 191a and the second pixel electrode 191b of data voltage with upper The common electrode 270 of display floater 200 produces electric field together, so that it is determined that between two electrodes 191 And the alignment direction of the liquid crystal molecule of the liquid crystal layer between 270.According to the direction of the liquid crystal molecule determined, Phase contrast through the light of liquid crystal layer changes, and therefore adjusts the amount of the light through polariser to control Display brightness.

In above-mentioned illustrative embodiments, describe the dot structure of LCD, at this dot structure In, even if being also provided with a horizontal trunk 193b and a vertical master in low gray scale subpixel area Dry 194b.

Hereinafter, with reference to Figure 19, neighbor will be described.

Figure 19 is the plane graph of the pixel according to illustrative embodiments of Figure 18.

Extra arrow shown in Figure 19 represents the alignment direction of liquid crystal molecule, and neighbor tool There is the structure-oriented of face each other.

Although Figure 19 showing structure-oriented, but neighbor can having structure in the same direction.

Hereinafter, wherein different voltages will be described with reference to Figure 20 to apply to according to exemplary embodiment party The equivalent circuit of the pixel of two pixel electrodes of formula.

As shown in figure 20, LCD according to an illustrative embodiment of the invention include gate lines G L, Data wire DL, the first electric lines of force SL1, the second electric lines of force SL2 and be connected to gate lines G L and The first switch element Qa and second switch element Qb of data wire DL.

LCD according to an illustrative embodiment of the invention farther includes to be connected to the first switch unit The auxiliary boost capacitor Csa of part Qa, the first liquid crystal capacitor Clca, be connected to second switch unit The secondary buck capacitor Csb and the second liquid crystal capacitor Clcb of part Qb.

First switch element Qa and second switch element Qb includes three-terminal element, such as, and TFT. First switch element Qa and second switch element Qb is connected to identical gate lines G L and identical number According to line DL to simultaneously turn on, thus export identical data signal.

The voltage swinging (swing) with predetermined period applies to the first electric lines of force SL1 and the second electric power Line SL2.First low-voltage applied extremely in predetermined period (such as, a horizontal cycle 1H) period First electric lines of force SL1, and apply the first high voltage to it during next predetermined period.Second High voltage applies to the second electric lines of force SL2 and in the next predetermined period phase during predetermined period Between apply the second low-voltage to it.In this case, to a frame repeatedly period 1 and Two cycles so that swing voltage applies to the first electric lines of force SL1 and the second electric lines of force SL2.This In the case of, the first low-voltage is equal to the second high voltage equal to the second low-voltage and the first high voltage.

Auxiliary boost capacitor Csa is connected to the first switch element Qa and the first electric lines of force SL1, and And secondary buck capacitor Csb is connected to second switch element Qb and the second electric lines of force SL2.

When the first low-voltage applies to the first electric lines of force SL1, auxiliary boost capacitor Csa connects The electricity of the terminal (hereinafter referred to as " the first terminal ") to the part of the first switch element Qa Pressure Va declines, and when applying the first high voltage, voltage Va rises.Hereafter, along with the first electric lines of force The voltage swing of SL1, the voltage Va of the first terminal swings.

Similarly, when the second low-voltage applies to the second electric lines of force SL2, secondary buck capacitor Csb is connected to the terminal at the part of second switch element Qb (hereinafter referred to as " the second end Son ") voltage Vb decline, when applying the second high voltage voltage Vb raise.Hereafter, along with The voltage swing of two electric lines of force SL2, the voltage Vb of the second terminal swings.

Thus, although identical data voltage applies to two sub-pixels, but the picture of two sub-pixels Voltage Va and Vb of element electrode is according to swing in the first electric lines of force SL1 and the second electric lines of force SL2 The size of voltage and change, and therefore, differently control the absorbance of two sub-pixels, thus change Kind side visibility.

Hereinbefore, the various illustrative embodiments of the present invention are described.

In above-mentioned LCD, the unit picture element electrode belonging to pixel electrode has small branch 197, And because the quantity of unit picture element electrode is many, so the quantity of small branch 197 is many.As a result, may be used The fully LCD Controlling power of acquisition control liquid crystal molecule, and therefore, can not be extra in liquid crystal layer Ground includes the prepolymer by photopolymerization.

But, according to another exemplary embodiment, can partly reduce LCD Controlling power, and therefore Prepolymer can be included at liquid crystal layer.

Reference Figure 21 is described in the method forming pre-tilt in the case of including prepolymer.

Figure 21 shows for by using the prepolymer being polymerized by light (such as, ultraviolet) to liquid Brilliant molecule provides the process of pre-tilt.

With reference to Figure 21, such as by the prepolymer 330 of the monomer of the photopolymerization such as ultraviolet first with Liquid crystal material injects between two display floaters 100 and 200 together.Prepolymer 330 can be to pass through The reactive mesogen primitive (reactive mesogen) that the light of such as ultraviolet is polymerized.

It follows that by respectively data voltage and shared voltage being applied to the first and second sub-pixel electricity The common electrode 270 of pole and upper display floater 200 liquid between two display floaters 100 and 200 Electric field is produced at crystal layer 3.Therefore, the liquid crystal molecule 31 of liquid crystal layer 3 in response to electric field along predetermined party To inclination.

Thus, when irradiating when the liquid crystal molecule 31 of liquid crystal layer 3 tilts along predetermined direction When the light of ultraviolet, prepolymer 330 is polymerized, and therefore provides the polymer 350 of pre-tilt to set It is set to as shown in figure 21.The polymer 350 providing pre-tilt contacts two display floaters 100 and 200. Determine the alignment direction of liquid crystal molecule 31 so that liquid crystal molecule 31 has such as the pre-tilt in above-mentioned direction. Therefore, even if when voltage does not apply to field to produce electrode 191 and 270 (with reference to Fig. 8), Liquid crystal molecule 31 is also arranged in the pre-tilt having corresponding to four different directions.

As a result, liquid crystal molecule 31 is in the upper sub-pixel of a pixel and each region of lower sub-pixel There is the pre-tilt of four direction.

The pre-tilt using polymer as shown in figure 21 is otherwise used in by by small branch 197 (ginseng According to Fig. 8) in the case of the control of LCD Controlling power that provides do not reduces texture.

Have been based on liquid crystal layer and include that the situation of photoreaction material describes the exemplary embodiment party of Figure 21 Formula, but this is applicable to both alignment layers and can include the situation of photoreaction material.

Although describing the present invention already in connection with the illustrative embodiments being currently viewed as reality, but Should be appreciated that and the invention is not limited in disclosed embodiment, but on the contrary, it is contemplated that The various deformation included in covering spirit and scope of the appended claims and equivalent arrangements.

Claims

1. a liquid crystal display, including:

First insulated substrate；

Gate line；

Data wire, is configured to intersect with described gate line and insulate with described gate line；

Thin film transistor (TFT), is connected to described gate line and described data wire；

Pixel electrode, is configured to include:

First pixel electrode, is connected to described thin film transistor (TFT)；And

Second pixel electrode；

The second insulated substrate, is configured to towards described first insulated substrate；

Common electrode, is arranged on described the second insulated substrate；And

Liquid crystal layer, is arranged between described first insulated substrate and described the second insulated substrate also And include multiple liquid crystal molecule,

Wherein, each in described first pixel electrode and described second pixel electrode Including unit picture element electrode, described unit picture element electrode includes from horizontal trunk and vertical trunk The multiple small branch extended.

Liquid crystal display the most according to claim 1, wherein, described unit picture element electrode has Two territories, said two territory has the plurality of liquid crystal molecule that alignment direction is different from each other.

Liquid crystal display the most according to claim 2, wherein, arranges described first sub-pixel electricity Region at pole is the first subpixel area and arranges the district at described second pixel electrode Territory is the second subpixel area,

Described vertical trunk and described first subpixel area and described second subpixel area Vertical edges adjacent,

The end of described horizontal trunk is connected to the center of described vertical trunk, and

The plurality of small branch from described vertical trunk and described horizontal trunk to described water Flat trunk tilts to extend.

Liquid crystal display the most according to claim 3, wherein, described first pixel electrode tool Following structure, the most described vertical trunk is had to be arranged at right side and described level Trunk extends to the left from described right side, and the plurality of small branch in upper right and At least one side in lower right upwardly extends, and

Described second pixel electrode has following structure, the most described vertical trunk It is arranged at described left side and described horizontal trunk extends to described right side from described left side, And at least one direction that the plurality of small branch is in upper left and lower left Extend.

Liquid crystal display the most according to claim 4, wherein, described first pixel electrode and The width of each in described second pixel electrode equals to or less than 140 microns.

Liquid crystal display the most according to claim 5, wherein, described vertical trunk and described water The width of at least one in flat trunk equals to or less than 25 microns.

Liquid crystal display the most according to claim 4, farther includes:

3rd pixel electrode, is configured to the left side with described first pixel electrode and the right side One in side adjacent；And

4th pixel electrode, is configured to the left side with described second pixel electrode and the right side One in side is adjacent,

Wherein, described 3rd pixel electrode and described first pixel electrode have towards knot Structure, and

Described 4th pixel electrode and described second pixel electrode have structure-oriented.

Liquid crystal display the most according to claim 7, farther includes:

Bucking electrode, is arranged in above described data wire, between adjacent pixel electrode, And

Described bucking electrode and described pixel electrode are arranged on identical layer.

Liquid crystal display the most according to claim 7, farther includes:

Bucking electrode, is arranged in above described data wire, between adjacent pixel electrode,

Wherein, described bucking electrode is arranged in the layer lower than the layer of described pixel electrode and sentences Partly overlap with described pixel electrode.

Liquid crystal display the most according to claim 9, wherein, by described first sub-pixel electricity Joining of pole and the plurality of liquid crystal molecule of described 3rd pixel electrode orientation that is adjacent Identical to direction, and

By described second pixel electrode and described 4th pixel electrode being adjacent The alignment direction of the plurality of liquid crystal molecule of orientation is identical.